A moving charged particle is subjected to an external magnetic field. The change in the kinetic energy of the particle
Correct answer: C. is always zero
- A. increases with the increase in the field strength
- B. decreases with the increase in the field strength
- C. is always zero
- D. depends upon whether the field is uniform or non-uniform
Explanation
C is the correct answer. The magnetic field does not do any work on a charged particle. Therefore, the kinetic energy of the charged particle remains constant when it moves in a magnetic field.
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About Electromagnetism
Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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